Features:\u25cf Bluetooth specification: V3.0\u25cf Anti-skid brushed texturing keyboard gives you a feeling of high class\u25cf Portable、 ultra slim and convenient for you to carry it to travel or go on a business trip\u25cf Can be used with smartphone、 tablet、 notebook、 PC etc.\u25cf Light weight、 quiet keystrokes、 water-proof、 dust-proof\u25cf Scissor type keyboard、 quick typing、 good feeling\u25cf With micro interface、 easy to charge\u25cf Energy saving keyboard sleep mode\u25cf Designed for Windows / iOS / Android、 please switch the system mode by pressing FN + Android / iOS / Android\u25cf Lifespan: 5 million strokes Specifications:Type: Keyboard Features: Mini、Slim Material: Metal、Plastic Color: Black Interface: Wireless Connection: Wireless Bluetooth Specification: V3.0 Operating voltage: 3.3 - 4.2V Charging time: About 5 hours Charging current: Less than 80mA Charging Voltage: DC 5V Standby time: More than 100 days Working Time: 72 hours above Operation Current: Less than 4.5mA Sleep Current: Less than 10uA Transmit Range: Within 10 meters Battery Type: Lithium battery Lithium Battery Capacity: 150mAh Package weight: 0.202 kg Product size (L x W x H): 24.70 x 15.00 x 0.60 cm / 9.72 x 5.91 x 0.24 inches Package size (L x W x H): 25.00 x 15.50 x 1.00 cm / 9.84 x 6.10 x 0.39 inches Package Contents: 1 x Ultra Slim Multimedia Wireless Bluetooth 3.0 Keyboard with Charging Port、 1 x USB Charging Cable